Earlier this year an OSPRI worker was killed in a quad bike accident while working on a farm.
"For us, that's one too many," she says.
"We had a long-term harm-reduction strategy in place that was recognised as industry-leading, and our measures indicated that quad bike incidents and fleet had been steadily decreasing," Ms Edge says.
"Yet we were not able to change the fundamental design of the quad, monitor its use, or provide adequate protection for our worker following an accidental loss of control."
In its work to eradicate TB from New Zealand's wildlife and farmed animals, OSPRI manages possum control and pest management work over 5.5 million hectares of New Zealand each year, undertakes almost 3.5 million TB tests and has eradicated TB from possums across 1.83 million hectares since 2011.
OSPRI health and safety lead James Knapp says, "Each year our people spend more than 300,000 hours in the field, often in remote and difficult terrain. Getting that work done safely and efficiently is important to us, so providing for an informed decision was a major undertaking."
OSPRI engaged service providers, reviewed all available research and worked in a consultative process to introduce these changes and enable time for those affected to adapt.
"We recognise the usefulness of quad bikes, and understand the risk involved in change with any vehicle. But opting for safer alternatives to quad bikes was the only way to minimise this risk," Mr Knapp said.
OSPRI manages the NAIT and TBfree programmes.
For more information, visit ospri.co.nz